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A001576 as a simple table

n a(n)
0 3
1 7
2 21
3 73
4 273
5 1057
6 4161
7 16513
8 65793
9 262657
10 1049601
11 4196353
12 16781313
13 67117057
14 268451841
15 1073774593
16 4295032833
17 17180000257
18 68719738881
19 274878431233
20 1099512676353
21 4398048608257
22 17592190238721
23 70368752566273
24 281474993487873
25 1125899940397057

[3,7,21,73,273,1057,4161,16513,65793,262657,
 1049601,4196353,16781313,67117057,268451841,
 1073774593,4295032833,17180000257,68719738881,
 274878431233,1099512676353,4398048608257,
 17592190238721,70368752566273,281474993487873,
 1125899940397057]

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Last modified April 23 05:37 EDT 2024. Contains 371906 sequences. (Running on oeis4.)